Girard-Perregaux Planetarium Tri-Axial Tourbillon

Girard-Perregaux Planetarium Tri-Axial Tourbillon  Photo: Courtesy Girard-Perregaux

A triple-axis tourbillon like Girard-Perregaux’s is a huge feat of engineering requiring extraordinary expertise to create one. The watchmaker’s first triple-axis tourbillon was released in 2014. Now Girard-Perregaux has upped its complexity by adding a 24-hour globe and moonphase display set in an aventurine dial. As a result, its new Planetarium Tri-Axial Tourbillon ($321,000) is a very big watch. Its case measures 21.52 mm thick, including the domes encasing the globe and tourbillon, and is 48 mm in diameter. The timepiece, which consists of 386 parts, features the GP09310-0001 caliber with 60 hours of power reserve.